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	hartrees
Energy at 0K	-265.648743
Energy at 298.15K	-265.650189
HF Energy	-265.648743
Nuclear repulsion energy	143.123383

Mode Number	Symmetry	Frequency (cm^-1)	Scaled Frequency (cm^-1)	IR Intensities (km mol^-1)
1	A'	3612	3590	74.41
2	A'	3411	3390	56.56
3	A'	2159	2146	55.71
4	A'	1717	1706	316.01
5	A'	1310	1302	72.00
6	A'	1128	1122	364.05
7	A'	804	799	15.05
8	A'	591	588	38.20
9	A'	559	556	5.07
10	A'	504	501	26.30
11	A'	173	172	5.76
12	A"	739	734	49.39
13	A"	636	632	14.43
14	A"	608	604	80.57
15	A"	214	212	7.39

Atom	x (Å)	y (Å)
C1	0.000	0.488
C2	-0.207	-0.944
C3	-0.472	-2.138
O4	1.328	0.806
O5	-0.901	1.315
H6	-0.699	-3.192
H7	1.362	1.787

	C1	C2	C3	O4	O5	H6	H7
C1		1.4473	2.6682	1.3651	1.2228	3.7456	1.8826
C2	1.4473		1.2227	2.3281	2.3633	2.3006	3.1505
C3	2.6682	1.2227		3.4507	3.4794	1.0778	4.3329
O4	1.3651	2.3281	3.4507		2.2857	4.4823	0.9818
O5	1.2228	2.3633	3.4794	2.2857		4.5111	2.3118
H6	3.7456	2.3006	1.0778	4.4823	4.5111		5.3890
H7	1.8826	3.1505	4.3329	0.9818	2.3118	5.3890

atom1	atom2	atom3	angle	atom1	atom2	atom3	angle
C1	C2	C3	175.718	C1	O4	H7	105.505
C2	C1	O4	111.712	C2	C1	O5	124.317
C2	C3	H6	179.649	O4	C1	O5	123.971

All results from a given calculation for C₃H₂O₂ (Propiolic acid)

using model chemistry: PBEPBE/aug-cc-pVDZ

States and conformations

	Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
	Home All data for one species Geometry Experimental Experimental Geometries Same bond/angle many molecules Internal Coordinates by type Bond angles Calculated Calculated geometry Rotational constant Moments of inertia Products of moments of inertia BSE Bond lengths Show me a calculated geometry Comparisons Bonds, angles Rotational Constants Products of moments of inertia Point group Bad Calculations Bad moment of inertia Tutorials and Explanations Angle formulas Vibrations Experimental Vibrational frequencies Calculated Frequencies Scale factors Reactions Entropies Ions List Ions Energy Calculated Ionization Energy Compare Ionzation energy Electron Affinity Calculated Electron affinity Compare Electron affinity Proton Affinity Calculated Proton affinity Compare Proton affinity Ionization changes point group Experimental One molecule all properties One property a few molecules Enthalpy of formation Entropy Integrated Heat Capacity Heat Capacity Rotational Constants Vibrational Frequencies Dipole moment Ionization Energy Polarizability Quadrupole Point Groups Geometry Experimental Geometries Internal Coordinates by type Bond angles Rotational Constants Point Groups Diatomic bond lengths Vibrations Vibrational frequencies Diatomic Triatomics Energy Atomization Energy Internal Rotation Electrostatics Dipole Quadrupole Polarizability Reference Data Reference states Spin Splittings Molecules with good enthalpy Enthalpy at 0 Kelvin Calculated Energy Optimized Energy Energy 298K Minimum conformation Hydrogen bonds H bond with counterpoise Reaction Reaction Energy 0K Reaction Energy 298K Internal Rotation Barriers to internal rotation Rotational barrier and dipole Rotational Barrier 2 molecules Orbital HOMO LUMO gap HOMO Orbital Energies Nuclear repulsion energy Correlation Full vs Frozen core energies Partial correlation energies Ion Calculated Ionization Energy Vertical ionization Energy Calculated Electron affinity Calculated Proton affinity Atom charge differences Excited State Singlet triplet gap Electronic state Transition state Basis Set Extrapolation BSE energy BSE Bond lengths Geometry Calculated geometry AIM bond orders One type of bond Rotation Rotational constant Products of moments of inertia Moments of inertia Inertial defects Second moments Point group State symmetry <r2> Sorted by r2 Z-matrix Bad Calculations Bad moment of inertia Bad Calculated Bond Lengths Bad point group Worst molecules Vibrations Frequencies Animated vibrations Anharmonic Zero point energy (ZPE) Scale Factors Scale factors Scale factor uncertainty Calculate a scale factor Why scale vibrations Set scaling factors Bad Calculations Bad Vib. 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Number	Element	Mulliken
1	C	0.737
2	C	-0.408
3	C	1.027
4	O	-0.453
5	O	-0.521
6	H	-0.630
7	H	0.248

	x	y	z	Total
	1.177	-1.160	0.000	1.653
CHELPG
AIM
ESP

	x	y	z
x	6.213	0.719	-0.000
y	0.719	10.031	-0.001
z	-0.000	-0.001	4.271

<r²>	107.663
(<r²>)^1/2	10.376

All results from a given calculation for C3H2O2 (Propiolic acid)

using model chemistry: PBEPBE/aug-cc-pVDZ

States and conformations

All results from a given calculation for C₃H₂O₂ (Propiolic acid)